Instruction manual

Connecting Devices to LD Ports 51
Modular Cables
RJ-11 modular cable is the flat cable used for wiring telephones inside
of buildings. The cable is terminated at each end with an RJ-11
modular plug (connector) which is inserted into the modular jack of
an appropriate wiring module. Standard modular cables available
from Equinox or wiring distributors are reversing; that is the pins are
reversed on each end (so that pin 1 on one end is connected to pin 6 on
the opposite end, etc.). Figure 4-9 illustrates the signals passed
through modular cables when connected to a LD port using the
Equinox part number 210117 LD modular splitter.
Modular Adaptors
Modular adaptors convert modular jacks to DB-25 (RS-232) connec-
tors. The following list describes the modular adaptors available from
Equinox. This list may be used to determine the correct modular
wiring required for system installation
Part No. Connector Connect To
210036 DB-25 DCE male terminals or ports (female DTE )
210037 DB-25 DCE female terminals, ports, IBM PC, XT, PS/2 (male DTE )
210026 DB-25 DTE male modems or multiplexer channels (female DCE)
210027 DB-25 DTE female Male DCE devices (non-standard devices)
210038 DB-9 female IBM PC AT serial port
Note: Although modems can be connected to LD boards, it is not
recommended because LD boards do not support control signals.
Figure 4-9. LD Modular cable signals.